Whats the advantage of the Gau-17 over x2 Gau-21s??
Gau-17 is a 7.62mm multi-barreled mini-gun, the 21 is a single barreled .50 cal. The rate of fire greatly of the 17 by far surpasses that of the 21. Also, you're a little off, you can actually put two 17's on a H, only one 21 on an H. The 7.62 round is much better (at least in my opinion) in providing the anti-personnel CAS role than the .50. For larger targets that the .50 cal would be better suited for isn't really in the realm of capability of any 60, except maybe the 60 DAP's that the 160th uses.
The unrefueled range of a 60H compared to a 60S with their stock internal tanks is significantly higher. When a 60S adds their internals to match the range of the 60H, it significantly reduces the floorspace available. Add to that that the 60H can throw an external on and increase range that much more without any reduction in floorspace, it's an obvious advantage.How does the loss of cabin space of a 60S w/ one internal aux tank compare to the comparatively reduced cabin space of a 60H with larger internal tanks (I know the syntax of that sentence is awful...)??